Gas-purifying apparatus



Patented Mar. l4, I899.

L. J. HIRT.

GAS PURIFYING APPARATUS.

(Application filed Sept. 22, 1897.)

(No Model.)

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ms NuRms IUzns c0. marqurno, wAsnmcm UNITED STATES PATENT Fries.

LOUIS J. I-IIRT, OF BROOKLINE, MASSACHUSETTS GAS-PURIFYING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 620,925, dated March14, 1899.

Application filed September 22,1897. Serial No. 652,624. (No model.)

To aZZ whom it may concern:

Be it known that I, LOUIS J. HIRT, residing in Brookline, in the countyof Norfolk and State of Massachusetts, have invented an Innprovement inGas-Purifying Apparatus, of which the following description, inconnection with the accompanying drawings, is a specification, likeletters on the drawings representing like parts.

This invention relates to a purifying-tower for illuminating and othergas, and has for its object to provide a simple, inexpensive, andefficient apparatus for handling loose pu rifying material.

The particular features of my invention will be pointed out in theclaims at the end of this specification.

Figure 1 is a vertical section of a purifying apparatus embodying thisinvention, and Fig. 2 a detail in plan to be referred to.

Referring to the drawings, A represents a shell or casing of metal orother suitable material which is preferably composed ofoppositely-tapering sections a a, the upper section a flaring from itstop a toward the lower section a, so that the substantially drypurifying material admitted into the purifier through suitable hoppers oa may descend without liability of becoming clogged or lodging on thesides of the said purifier. The shell or casing A has secured to itsinner walls, in any suitable manner, a perforated horizontalpartitionwall or grate-surface a, having slots of openings a? of anysuitable or desired size, according to the nature of the purifyingmaterial used, the said partition or grate dividing the purifier-towerinto an upper chamber a and a lower chamber a". The upper chamber acontains an agitator for the purifying material, which is preferablymade as herein shown and consists of a series of vertically-extendedoblique arms ct ,fastened at suitable distances apart to a verticalshaft a having bearings at its upper end in a boss or box a, secured tothe under side of the top a of the casing A and having its lower endstepped in a suitable hanger or frame a, secured, as by rivets or boltsa, to the walls of the chamber ta The shaft 0. may be rotated by meansof a worm b on ahorizontally-extended shaft 1), engaging a worm-gear bon the shaft a the said wormshaft having bearings in uprights b attachedto the hanger (N and in a box 5 attached to one of the supportinguprights or legs 19 for the casing A, the said shaft being extendedgas-tight through a suitable stuffing-box b in the lower part of thecasing A and provided, as shown, with a'driving-pulleyb The verticalshaft 00 near its upper end, has secured to it a hub or sleeve 19 havingextended from it radial arms b provided with depending teeth Z9 and thesaid shaft, near the grate-- surface a, is provided with a collar b,having extended from it a series of radial arms I), which cooperate witha stationary frame attached to the casing A above the radial arms 5 andhave the functions of what may be termed a breaker. The stationary frameor breaker may and preferably will be made as herein shown, and consistsof an outer ring 2, which is secured to the shell or casing A, an innerring 3, encircling the vertical shaft (0 and radial arms 4:, which, asherein shown, extend close to the revolving arms b, so that in therotation of the shaft 00 the arms b will carry the purifying materialagainst the stationary arms 4 and serve to break up any large lumps ormasses of the purifying material and reduce the same to substantially apowdered condition or to a sufficiently fine state to permit it to passor be forced through the opening a in the gratesurface into thehopper-shaped chamber a", from which the said purifying material may bedischarged through the month 12 normally closed bya slide or valve 6 Thehoppers a a are each provided with avalve c to close the outlet-mouth ofthe hopper, which may be raised and lowered by a lever c, and eachhopper is provided with a removable cap or valve 0 for the inlet-mouthof said hopper. The purifying-towerhas connected to it a gasinlet pipe c,extended,as shown,into the-chamber a and with a gas-outlet pipe 0communicating with the chamber a near its upper end.

In practice the chamber a of the purifier, is filled with substantiallydry purifying materialsuch, for instance, as oxid of iron-=- and whensubstantially full the valves 0 are closed and the agitator set inmotion. The teeth 6 serve to rake over and open up the top or freshestlayer ofpurifying material, so as to expose the partially-purified gasascending through the material to the most energetic action of thepurifying material just previous to the said gas leaving the purifier,to thereby remove traces of the impurities in the gas. The purifyingmaterial is continuously fed down toward the bottom of the chamber a andbecomes progressively saturated with the impurities absorbed by it fromthe gas, so that where it is forced through the openings a in the gratesurface or bottom a it is saturated with impurities.

In order to regulate the size of the openings a in the grate-surface ato the material used, the said grate-surface has cooperating with it alike surface d, provided with openings cl, and which is movable, asherein shown, by means of a hand-wheel d on a screw-threaded rod (1attached to the movable grate-surface d, which latter has the functionsof a sliding valve to vary the size of the openings a The worm b andworm-gear b may in practice be covered with a suitable hood. (Not hereinshown.)

I claim- 1. In a gas-purifying apparatus, the combination of thefollowing instrumentalities,

viz: a tower provided with a transverse partition-wall forming a chamberabove and below it and provided with openings through which the materialpasses from the upper to the lower chamber, an agitator in the upperchamber, and a breaker for the purifying material cooperating with saidagitator, substantially as described.

2. In a gas-purifying apparatus, the combination of the followinginstrumentalities, viz: a tower provided with a transversepartition-wall forming a chamber above and below it and provided withopenings through which the material passes from the upper to the lowerchamber, a revolving agitator in said upper chamber, and a stationarybreaker cooperating with said agitator, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

LOUIS J. HIRT.

Witnesses:

JAS. H. CHURCHILL, J. MURPHY.

